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Finding the Fourth Proportional to 93,407.88, 128,907.45 and 52,584.69

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Solution

The fourth proportional to 93,407.88, 128,907.45 and 52,584.69 is: 72,569.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,407.88 : 128,907.45 = 52,584.69 : x
  2. Step 2: Convert to fraction form
    93,407.88/128,907.45 = 52,584.69/x
  3. Step 3: Cross multiply
    93,407.88x = 128,907.45 × 52,584.69
  4. Step 4: Simplify right side
    93,407.88x = 6,778,558,296.94
  5. Step 5: Solve for x
    x = 6,778,558,296.94/93,407.88
  6. Step 6: Final answer
    x = 72,569.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.